Patents Assigned to Wwetco, LLC
  • Filter apparatus backwash removal device and backwash removal method
    Patent number: 7435351
    Abstract: A filter media backwash removal method and device for transporting backwash fluid and solids away from re-entering a housing containing circulating filter media.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: October 14, 2008
    Assignee: Wwetco, LLC
    Inventors: Mark C. Boner, Paula K. Gurney
  • Apparatus and method for filtering fluids
    Patent number: 7223347
    Abstract: The present invention provides an apparatus and method for filtering fluids with a compressible filter media within at least a portion of a housing inwardly compressible.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: May 29, 2007
    Assignee: WWETCO, LLC
    Inventors: Mark C. Boner, Paula K. Gurney
  • Flexible bladder apparatus for fluid flow control
    Patent number: 7143781
    Abstract: The present invention provides an apparatus and method for controlling the flow of fluids through a conveyance with a hydraulic valve including a flexible portion. The flexible portion is positioned in the conveyance so that fluid enters the membrane from an upper containment space and the expansion of the flexible portion causes the valve to restrict or block the flow of fluid being controlled through the conveyance.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: December 5, 2006
    Assignee: Wwetco, LLC
    Inventors: Mark C. Boner, Paula K. Gurney